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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 29, Number 8
BKCSDE 29(8)
August 20, 2008 

 
Title
Nanocrystalline Copper Oxide(II)-Catalyzed Alkyne-Azide Cycloadditions
Author
Young-Jin Song, Chungyul Yoo, Jong-Tai Hong, Seung-Joo Kim, Seung Uk Son, Hye-Young Jang*
Keywords
Click chemistry, Copper oxide nanoparticles, Cycloaddition, Heterogeneous catalysis
Abstract
Although the use of Cu(II) salts as catalysts without reductants is limited in the cycloaddition of acetylenes with azides, the catalytic system employing average 10 nm CuO(II) nanoparticles in the absence of reductants shows good catalytic activity to form 1,4-disubstituted 1,2,3-triazoles even in wet THF as well as water. It is also noticeable that CuO(II) nanoparticle catalysts can be recycled with consistent activity. A range of alkynes and azides were subject to the optimized CuO(II) nanoparticle-catalyzed cycloaddition reaction conditions to afford the desired products in good yields.
Page
1561 - 1564
Full Text
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